diff --git a/ci/release/template/man/d2.1 b/ci/release/template/man/d2.1
index ff8263105..7eb318f62 100644
--- a/ci/release/template/man/d2.1
+++ b/ci/release/template/man/d2.1
@@ -112,6 +112,9 @@ Print debug logs.
 .It Fl -img-cache Ar true
 In watch mode, images used in icons are cached for subsequent compilations. This should be disabled if images might change
 .Ns .
+.It Fl -timeout Ar 120
+The number of seconds before d2 will timeout.
+.Ns .
 .It Fl h , -help
 Print usage information and exit.
 .It Fl v , -version